Magnetizing apparatus.



PATENTED FEB. 21, 1905. Y J. B. SHERWIN.

MAGNETIZING APPARATUS.

APPLIOATION FILED MAY 28. 1904.

l N V 5 IV TOR JE/znflJZerwz'n A TTORN llilllllllll UNITED STATES Patented February 21, 1905.

JOHN BLAGKETT SHERWIN, OF BUTLER, PENNSYLVANIA.

MAGNETIZING APPARATUS.

SPECIFICATION forming part of Letters Patent N0. 783,321, dated February 21, 1905.

Application filed May 28, 1904:. $erial No. 210,186.

To all whom it may concern:

Be it known that I, JOHN BLAOKETT SHER- WIN, a citizen of the United States, and a resident of Butler, in the county of Butler and State of Pennsylvania, have invented a new and Improved Magnetizing Apparatus, of which the following'is a full, clear, and exact description.

My invention relates to apparatus for transforming bars of. iron or steel into permanent magnets, its principal objects being to provide a simple apparatus of this class which may be energized for a limited time by the insertion of a coin or like conducting element.

It consists in the various features and combinations hereinafter described and more pa-r= ticularly claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of one embodiment of my invention, a portion of the casing being broken away to show the interior. Fig. 2 is a vertical transverse section therethrough. Fig. 8 shows the solenoid in side elevation with a portion broken away, and Fig. 4 is a broken end elevation of the solenoid.

1O designates a casing, in the upper portion of which is an opening or slot 11, which I prefer to make of such dimensions as to just ad-' clined laterally, so that the side 14 is lower than the side 13. Along this side 14 extend conductors 15 (here shown as two in number) and situated substantially parallel and in proximity to one another, they being uninsu-' lated. They are placed by a conductor 16 in circuit with a source of electrical energy, which may conveniently consist of some such cell, as a dry-battery 17, located within the casing, and with a coil or solenoid 18. This solenoid is formed of a suitable number of turns of insulated wire wound in the usual manner upon a bobbin 19, preferably of nonconducting material, said bobbin having a longitudinal opening 20, one end of which is in alinement with and in proximity to an opening 21 near the lower portion of the casing. Upon the side of the casing and below the end of the trough, so that it lies in'the path of a coin falling thereon, is a bell 22.

In use the object to be magnetized-for example, a bar of iron B is inserted through the opening 21 into the solenoid. A disk of metal, preferably a cent, (indicated at C in dotted lines in Fig. 1 of the drawings,) is then introduced through the slot 11 and will fall in to the trough and on account of the longitudinal and transverse inclination of the trough will roll down the same in contact with the conductors 15, completing the normally open circuit through the battery and solenoid. This causes the current to flow about the latter and produces a field of force which transforms the bar B into a permanent magnet. When the coin reaches the end of the trough, it falls upon the bell and gives to the person using the apparatus an audible signal that the operation is completed. The casing may be provided with a suitablylocked door 23, through which the accumulated coin may be removed, as desired.

My invention may be employed as an amusement apparatus and at a profit to the person maintaining it and is also of utility in producing small permanent magnets for various purposes, screw-drivers often being treated in this manner to cause them to support screws for convenience in applying them in inaccessible places.

Having thus described'my invention, Iclaim as new and desire to secure by Letters Patent 1. The combination with a casing provided with two openings, of a conduit within the easing situated beneath one of the openings, conductors extending along the conduit, a solenoid in circuit with the conductors and having its opening located opposite the second therefrom, conductors extending along the to this specification in the presence of two sublower slde of the conduit, a solenoid 1n circuit scribing Witnesses.

with the conductors and having its, opening i v located opposite the second casing-opening, JOHN BLALKEF'LE SHERWIN' 5 and a battery located within the casing and Witnesses:

included in the circuit. L. P. WALKER, Intestirnony WhereofIhavesigned my name H. H. REED. 

